|
| TABLE 4 | ||||||||
| INDUSTRIAL SAND AND GRAVEL PRODUCTION IN THE UNITED | ||||||||
| STATES IN 2006, BY SIZE OF OPERATION1 | ||||||||
| Quantity | ||||||||
| Number of | Percentage | (thousand | Percentage | |||||
| Size range | operations | of total | metric tons) | of total | ||||
| Less than 25,000 | 23 | 19 | 243 | (2) | ||||
| 25,000 to 49,999 | 11 | 9 | 363 | 1 | ||||
| 50,000 to 99,999 | 18 | 15 | 1,110 | 3 | ||||
| 100,000 to 199,9 | 17 | 14 | 2,250 | 7 | ||||
| 200,000 to 299,9 | 17 | 14 | 3,750 | 11 | ||||
| 300,000 to 399,9 | 10 | 8 | 3,260 | 10 | ||||
| 400,000 to 599,9 | 3 | 1 | W | 4 | ||||
| 600,000 to 699,9 | 6 | 5 | 3,670 | 11 | ||||
| 700,000 and more | 15 | 12 | 15,700 | 49 | ||||
| Total | 120 | 100 | 31,700 | 100 | ||||
| 1Data are rounded to no more than three significant digits; may not add to totals shown. | ||||||||
| 2Less than � unit. | ||||||||
Source: United States Geological Survey Mineral Resources Program